How do I buy Pokecoins?

I know I can't buy it on PGsharp, but I'm wondering how to do it without getting banned. I tried signing into regular PoGo on 3 different phone emulators and it just crashes after i click my google account to login on each and every single one.
Ive tried, Bluestacks, Mumu, and Nox. Every single one has the exact same outcome. I would uninstall pgsharp and reinstall the regular app on my actual device but i spoof my location so I'll be teleporting a whole country away after logging back in, which i feel would REALLY get me banned immediately. So how do i do this? i just want a few raid passes for the event. can i just uninstall pgsharp and reinstall normal pogo to buy coins or is that a ban-wish?